查询词典 light emission

The view point about biophoton field elementally belong to a Gaussian field and which was superposed at least by two independent parts of photon emission,one is coherent light field of pure coherent state,another one is chaotic light field which is in heat balancing situ...

提出生物光子场基本上属于高斯场的观点，并认为它至少是由两个独立部分的光子辐射迭加的结果：其一是纯相干态的相干辐射；另一则为混沌态的热光源辐射。

Professional production of various specifications Super bright red, green, yellow, blue, white, pure green, and ultraviolet light-emitting diode, emission receiver tubes, light tubes, etc. Optical Products, and sales in Taiwan SMD Mounter II , transistor components series.

专业生产销售各种规格的超高亮红光、绿光、黄光、蓝光、白光、纯绿、紫外线发光二极管、发射接收管、光敏管等光电产品，并销售台湾产SMD贴片二、三极管元器件系列。

Light Amplification by Stimulated Emission of Radiation; produces an intense monochromatic beam of coherent light.

通过受激发射光扩大；能够产生连在一起的强烈的单色射束。

In this image, far-ultraviolet light is blue, near-ultraviolet light is green and radio emission at a wavelength of 21 centimeters is red.

在这种形象，远紫外线是蓝色的，近紫外线是绿色和无线电发射波长为二十一厘米是红色。

The greater Eagle emission nebula, tagged M16, lies about 6500 light years away, spans about 20 light-years, and is visible with binoculars toward the constellation of Serpens.

老鹰星云及其周围的发射星云合称为M16，大小约为20光年，距离我们约有6500 光年远，用双筒望远镜可在北天的巨蛇座内找到它。

Light source selection of print, in the light source is a notable issue, iodine gallium lamp is a type of light source are appropriate for plate burning, its high continuous use, the emission wavelength of microspectroscopic spread over 350 MW to 450nm to 417nm to the highest Summit, for most printing plate photoptic layers.

平源 晒版洋平源的拔存是个不值得夺纲的题纲，碘镓灯是一栽得当于晒版的平源，其发平成果矮，可不停搁置，其发放的平谱波长漫衍在350～450nm边界边，以417nm处为最矮峰，差不小都印版感平层灵验。

We found out one kind of new orange-red long afterglow material La2O2S: Eu3+, Mg, Zr.2 In the phosphor Gd2O2S, Mg, Ti which was prepared by high-temperature solid-state method, the orange afterglow phenomenon can be seen after illuminated with UV light.3 Using the high-temperature solid-state method, Gadolinium oxysulfide phosphors doped with rare earth ions were synthesized. We can observe the red or orange phosphorescence in Gd2O2S doped with Eu3+, Sm3+, Tm3+, Yb3+, Dy3+, Er3+, Nd3+or Ho3+. This is a new result of the long afterglow phosphors research.4 Using the microwave radiation method, the new Sm3+ doped gadolinium oxysulfide phosphor, which has the orange-red long afterglow emission after illuminated with UV light or visible light, was synthesized for the first time.5 In fluorescent materials YOX doped with europium ions, the long afterglow phenomenon wasnt observed but the blue luminescence of Eu2+ and red luminescence of Eu3+ are simultaneously examined. This is a new result of the valence stability and change of Eu2+ in yttrium oxyhalide .We systematically studied the effects of the host, addition agents and reaction atmosphere on the valence change and fluorescence property of europium ions.

经过系统的研究总结得到以下的结论与成果： 1采用高温固相反应法合成了一系列稀土离子掺杂的硫氧化镧发光粉，发现了该体系中Eu~(3+)的长余辉发光，从而得到一种迄今未见文献报道的红色长余辉发光材料：La_2O_2S：Eu~(3+)，Mg，Zr； 2在Gd_2O_2S，Mg，Ti磷光粉中观察到橙色的长余辉发光现象； 3采用高温固相反应法合成了一系列稀土离子掺杂的硫氧化钆磷光粉，在掺杂Eu~(3+)、Sm~(3+)、Tm~(3+)、Yb~(3+)、Dy~(3+)、Er~(3+)、Nd~(3+)、Ho~(3+)的Gd_2O_2S中观察到红色和橙色长余辉发光； 4首次采用微波法合成了Gd_2O_2S：Sm~(3+)，Mg，Ti磷光粉，该磷光粉经紫外或可见光激发后呈现明显的橙红色长余辉发光； 5在YOX中同时观察到Eu~(2+)和Eu~(3+)的发射，系统研究了基质、添加剂及反应气氛对Eu价态和发光的影响。

A great number of dynamometer experiments are carried out to investigate the effects of structure characteristics of the injector, configuration of combustion chamber, design of the bypass valve and fuel injection phasing on the performance, emission, fuel consumption of the engine during light load operating conditions. After a final optimization and other practical considerations, the control MAPs for the two-stroke DISI prototype engine are obtained. The torque performance, fuel consumption and emission economy of the engine is tested and compared with those of the original carbureted engine.

并且通过大量的发动机台架试验，分析了喷油相位和喷油器的结构参数、燃烧室形状、旁通孔的大小等参数对发动机低速低负荷工况下的性能、燃油消耗和排放的影响规律；通过最后的优化和实际的考虑，获得了最终的二冲程直喷发动机样机的控制MAP图，试验研究了其动力性、燃油经济性以及排放性能，还做了该样机和原化油器发动机的动力性能、燃油消耗率和排放性能的比较。

According to the light reflecting principle, the light is reflected between the walls until to the angle reflector which can make the light ray return the emission point along the original way.

当光幕中间进入外物时，光束即被截止，光接收装置接收不到反射光，控制装置就判断门之间出现了外物，立即通知后续处理单元采取开门动作。

In order to obtain more exact analytical solution to study the output characteristics of double-clad fiber lasers,according to the continuous-wave rate equations of fiber lasers,using typical parameters of double-clad fiber lasers,the contribution of the re-emission effect arising from the interaction between the upper-level atoms and pump light was estimated.Taking into account the predominant part of the re-emission to improve the accuracy of the integration approximated rate equations,the integration of the product of the loss and radiation should be found and explicit analytical expressions for the output of the DCFLs and gradient efficiency of the pump radiation,were deduced,and certain issues of concern were discussed.

为了求得用于研究双包层光纤激光器输出特性的更为精确的解析解，根据稳态速率方程组，针对典型的双包层光纤激光器参量，在估计了上能级粒子再发射项和抽运光产生的影响后，采用保留再发射贡献主导部分的办法以提高可积分近似方程的精确度，明确地提出了要获得光纤激光器输出功率的解析表达式的关键在于求出损耗系数与光场乘积的积分值，简洁地求得了输出功率和抽运光斜线效率的显函数解析表达式，并对其相关问题进行了讨论，以915nm，920nm和975nm的抽运光为例，当输出激光为1090nm时，得出975nm抽运光产生的斜率效率最高并可高达约87%。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。